Redken Acidic Perfecting Concentrate Leave-in Treatment 150 ml is an innovative leave-in treatment, formulated to give hair softness, shine, and protection. Its acidic formula balances the pH of the hair fiber, strengthening the struttura and improving elasticity. Ideal for stressed and dull hair, it makes hair easier to comb without weighing it down, reducing frizz. A perfect ally for a una healthy, disciplined, and visibly regenerated mane, ensuring long-lasting results and a natural, fresh, and luminous appearance.